RH-POLYPEPTIDE-17 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

RH-POLYPEPTIDE-17

Safety grade: A

This is a lab-created protein fragment designed to help skin retain moisture and improve its appearance. It works by strengthening the skin's natural barrier and may help reduce the look of fine lines. You'll typically find it in serums, moisturizers, and anti-aging products.

Graded using: COSING.

Last verified: June 9, 2026